You need common denominators to add or subtract fractions. If you multiple (2/5) by 2 to both the top and bottom, you get (4/10). Now you just subtract the top numbers, or numerators. 4 - 3 = 1. Answer: 1/10.
Answer:
Step-by-step explanation:
7hours x 
= 420 minutes
A cone is 1/3 the volume of a cylinder so 1/3 * (π r^2) * height
remember r = 1/2 the diameter
Answer:
c. 7
Step-by-step explanation:
Amanda is 15. 15 is 3 times the age difference so you know the age difference is 5. Britney is 12 so subtract 5 and thats 7.
